The Sangean H200 waterproof speaker uses Bluetooth Version 4.1 Class II and NFC technology allows simple pairing and connecting to your device. The H-200 also allows you to use your iPhone or Android device as a hands-free speakerphone that includes call, answer, and hang-up button. The #18650 2200 mAh built-in Lithium-ion battery may be recharged by the supplied USB charging cable (USB power source not included) and allows many hours of listening. You will never have to worry about dropping the H-200 in water, it is waterproof to the JIS7 rating standard whcih means it is completely submersible. So whether your at the beach, the lake or in the shower you'll have peace of mind knowing the H-200 is ready to go wherever you want to take it. A convenient folding and collapsible handle makes the H-200 Bluetooth Speaker ready to hang or place where ever you need it.